Drywall twin cutting block
OwnerClifford R. Murdockinventor
Life of this patent
Estimating the term…
Abstract
A dry-wall cutting tool is described. It has a block-like configuration and is designed to slide over the edge of the drywall and to cut both sides of the drywall to the same distance from the edge and at the same time as it does so. The depth of the cut (i.e. distance from the edge of the drywall being cut) can be controllably varied considerably and it will typically be between 1/8 inch and 6 inches deep from the edge of the drywall that is being cut. The cutting tool has vertical threaded shafts upon which are mounted cutting wheels and rubber or nylon rollers, with ball bearings between the shafts and the cutting wheels and rollers. Due to its construction the twin cutting can be done quickly and with little manual effort or force.
Claims12
An apparatus suitable for cutting a precisely controlled desired depth of dry wall from one of the edges thereof as the apparatus is pushed across the edge of the dry wall being cut, the main body of said apparatus being in the form of a block having a top and side walls and end walls and having a channel therein between the side walls, the width of said channel being only slightly greater than the thickness of the dry wall to be cut, said apparatus having a top plate which is controllably raised or lowered in the channel so as to butt up against the edge of the dry wall to be cut, and said apparatus having cutting wheels in the opposing interior faces of the channel so as to simultaneously cut the dry wall on both sides of same as the apparatus is pushed across the edge of the dry wall being cut, said cutting wheels being supported on vertical threaded shafts, with ball bearing bushings housed between the shafts and the cutting wheels and said threaded shafts also supporting rubber or nylon rollers, with ball bearing bushings housed between the shafts and the rollers.
Dependencies are inferred from the claim text.